When it comes to classifying it there are several possibilities. There is landscape in the shot and the barn is obviously part of the landscape but I wouldn't say that the landscape is the main subject. I would say it's not wrong to classify it as a landscape shot but I would say it's more appropriate to classify it as something like a barn shot or a rural architecture shot. But the bottom line is that you can classify it whatever way you think is appropriate. It's not a requirement in this section that the landscape part of a shot has to be the predominant aspect of the shot - just one of the main components or themes.